/Engine/Plugins/Experimental/RemoteSession/Source/RemoteSession/Public/Channels/RemoteSessionARSystemChannel.h
Add candidate image at runtime
True if it added the iamge successfully
virtual bool OnAddRuntimeCandidateImage ( [UARSessionConfig](API\Runtime\AugmentedReality\UARSessionConfig) * SessionConfig, [UTexture2D](API\Runtime\Engine\Engine\UTexture2D) * CandidateTexture, [FString](API\Runtime\Core\Containers\FString) FriendlyName, float PhysicalWidth )